"Comprehensive Update on Pennsylvania's Impending Winter Storm and Snowfall Predictions"

South-central Pennsylvania is bracing for a winter storm today with an advisory in effect from the morning. Snow will develop between 10 AM and 12 PM, with potential snowfall rates of an inch per hour, leading to reduced visibility and deteriorating road conditions. The snow will be moderate to heavy northwest of I-81, with a mix of snow and rain, especially southeast of I-81. Precipitation is expected to taper off between 6 and 10 PM. Accumulations of 5 to 8 inches are expected in the majority of the Susquehanna Valley, with 2 to 5 inches in southern areas, potentially reduced by rain. The Pennsylvania Farm Show is advised against today due to weather, and the forecast for the following days includes improving conditions.